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Atomic Structure Notes, Study notes of Chemistry

Atomic Structure Notes. Atoms: - Smallest particle of an element that has all the properties of that element. - -Atoms are the basic building blocks.

Typology: Study notes

2021/2022

Uploaded on 09/27/2022

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Atomic Structure Notes
Atoms:
-Smallest particle of an element that
has all the properties of that element.
--Atoms are the basic building blocks
of matter that make up everyday
objects.
-2 main parts of an atom:
Nucleus-99.9% of the atom’s mass
Electron cloud or energy rings
-Atoms are made of subatomic particles:
protons, neutrons, & electrons
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Atomic Structure Notes

Atoms :

  • Smallest particle of an element that

has all the properties of that element.

  • -Atoms are the basic building blocks

of matter that make up everyday

objects.

-2 main parts of an atom:

Nucleus-99.9% of the atom’s mass

Electron cloud or energy rings

-Atoms are made of subatomic particles:

protons, neutrons, & electrons

Atoms are composed of three primary particles:

protons, neutrons, and electrons

Particle Symbol Location Electrical Charge

Relative Mass (amu)

How do you find out how many?

Electron

Proton

Neutron

Electron Energy Levels

Energy Level How many electrons it holds up to

There is a unique number of

electrons that can fit in each

electron level.

Determining Atomic Structure Using the Periodic Table

Atomic Number

Atomic Mass # : The

weighted average mass of all the isotopes (different versions) of an atom of a specific element; measured in atomic mass units, amu.

Chemical Symbol

Element Name

B

Boron

Mass #: Atomic Mass Number

rounded to the nearest whole number.